A 16-channel heterodyne electron cyclotron emission radiometer on J-TEXT

Journal Article · Mon Oct 15 04:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4732069· OSTI ID:22093924

Yang, Z. J.; Zhuang, G.; Xiao, J. S.; Wang, Z. J. ^[1]; Phillips, P. E.; Huang, H.; Rowan, W. L. ^[2]

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1. State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)
2. Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States)

To study equilibrium temporal dynamics and the mechanisms of magnetohydrodynamic instabilities, a 16-channel heterodyne electron cyclotron emission (ECE) radiometer has been developed to view the J-TEXT tokamak from the low field side. The ECE radiometer detects second-harmonic extraordinary mode in the frequency band of 94-125 GHz which corresponds to resonances from 1.8 T to 2.2 T. This ECE system consists of an ECE transmission line, a radio frequency unit, and two 8-channel intermediate frequency units. An in situ blackbody calibration source is applied for system calibration by comparison of hot and cold sources in order to provide an absolute temperature measurement.

• OSTI ID: 22093924
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 83; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CALIBRATION
CONFINEMENT
CYCLOTRON RADIATION
CYCLOTRONS
ELECTRON EMISSION
EMISSION
EQUILIBRIUM
INSTABILITY
PLASMA
POWER TRANSMISSION LINES
RADIOMETERS
RADIOWAVE RADIATION
RESONANCE
TEMPERATURE MEASUREMENT
TOKAMAK DEVICES